It was a screener with a recruiting manager. I was asked why law, why patent litigation, why engineering, why I would want to practice in the area that I chose when I graduate.

Two rounds of interviews - first interview only 20-30 minutes, second was about 1.5-2 hours. The callback round featured 3-4 half hour long interviewers, but each was fairly similar with similar questions (and not drastically different from original interview)